The life of a Starfleet captain is filled with life-or-death decisions, moral conundrums and prickly dilemmas involving myriad alien cultures. With all of these responsibilities and duties, there's very little time for romantic attachments or even minor flirtations. And yet ... somehow, the captains of Star Trek always manage to make time — even if it's in the form of time travel, illusory beings, androids, holodeck programs and Mirror Universes.

In honor of Valentine's Day, we'd like to recall some of the most memorable romantic interludes of the captains of Star Trek.

Kirk: Certainly, no one can deny James T. Kirk's prowess when it comes to the ladies. His Academy days boasted flings with Ruth and Janice Lester, and during the course of the Enterprise mission, he locked lips with everyone from green-haired drill thrall Shahna to the Mirror Kirk's Marlena Moreau. A few romances remain stand-outs, however, mostly due to the unique bonds Kirk formed with these particular women. There was scientist Carol Marcus, with whom Kirk had a son. No, the exact nature of their coupling was never fully explained, but the sparks that highlighted their interaction in "Star Trek II: The Wrath of Khan" always gave us the idea that there was something more to their relationship than a mere fling. Kirk also seemed to find love with Miramanee, the Preservers' tribal priestess with whom he became involved after suffering from amnesia. Their brief time together was marked by a delicate sort of interplay and an unmistakable sweetness. When Miramanee died in Kirk's arms, it made for a truly moving moment in Original Series history. And of course, no discussion of Kirk and romance would be complete without mention of Edith Keeler, the woman that Kirk was forced to sacrifice for the greater good — and who may have been his greatest love. Of course, one could also make a case for beautiful android Rayna Kapec or the unseen Antonia (from "Generations"), but no matter how you slice it, one thing remains clear — out of all the commanding officers, Kirk was definitely the most accomplished in the romantic arena.

Picard: He might not have quite the reputation that Kirk does, but there's no denying that Jean-Luc Picard has his own distinct brand of charm when it comes to wooing the most charming of Star Trek: The Next Generation's guest stars. One of his most memorable affairs remains his opposite-attract coupling with Vash, whom he somehow managed to snag by acting completely disinterested (playing hard to get, Jean-Luc?). The romance with Vash made for good fun, but Picard was perhaps a bit more serious about Enterprise-D scientist Nella Daren, an accomplished pianist who ended up dueting with Jean-Luc both musically and romantically. Their affair also explored a fascinating issue: what really happens when a captain dates one of his crew? Because of Picard's refusal to place Nella in danger, she ended up departing her post. One of Picard's most touching relationships occurred when he was literally living out the life of someone else entirely. As iron weaver Kamin, Picard encountered wife Eline — and slowly, throughout the course of the episode, fell deeply in love with her. The moment wherein he gently tells her that he wants to start a family remains one of the most moving in Picard's romantic history. And naturally, the captain's most multi-layered interplay remains his will-they-or-won't-they tango with Beverly Crusher, which was most incisively explored in the seventh season episode "Attached."

Sisko: As a widower struggling to raise an adolescent son, Benjamin Sisko didn't have much time for romance in the early years of Star Trek: Deep Space Nine. He did indulge in a brief affair with Fenna, an enchanting mystery woman with whom he shared a unique chemistry. Unfortunately, Fenna ended up being merely a psycho-projective alter ego accidentally created by the alien Nidell. Once Nidell's emotional distress ended, so did the existence of Fenna. Sisko also developed an attraction to (of all people) the Mirror Universe version of his late wife, Jennifer. Though their encounters were somewhat stormy (one involved Mirror Jennifer kidnapping Jake from DS9), these two developed a certain mutual understanding, and both couldn't help but wonder what might have been. Sadly, the Mirror Jennifer's life ended tragically as well, as she sacrificed herself to save Jake — and Sisko was forced to say good-bye to his wife yet again. Of course, Sisko finally got his due in the romance department thanks to a little matchmaking by Jake, who set him up with feisty freighter captain Kasidy Yates. The chemistry between the two made for an enjoyable courtship, and culminated with their marriage in DS9's final season.

Janeway: Like Sisko, Kathryn Janeway had a compelling reason for not pursuing romantic relationships in the early years of Star Trek: Voyager: she was engaged to marry boyfriend Mark prior to being trapped in the Delta Quadrant. Sadly, Mark married someone else while she was away, but Janeway still didn't feel completely at liberty to pursue relationships with others. She did, however, have several meaningful romantic entanglements, perhaps most notably with Fair Haven hologram Michael Sullivan, who called her "Katie." Their relationship had a certain tragic poignance to it, as Janeway found herself falling love with Michael despite the fact that they could never truly be together. Even when Michael learned the truth about Katie's identity, the two still managed to form a meaningful bond. Janeway found love again when the Voyager crew was brainwashed into working on the alien world Quarra, in the form of a co-worker named Jaffen. Sadly, this was another romance that was never meant to be. Perhaps Janeway's most interesting connection was her chemistry-laden bond with first officer Chakotay — it seemed a distinct possibility that the two might actually act on their latent feelings when they were trapped together on an alien world in "Resolutions." In the end, though, they returned to Voyager — and their traditional captain-first officer relationship.

Archer: As he's only been exploring the various corners of space for a year and a half, Jonathan Archer's experience with romance is somewhat limited compared to that of Trek's other captains. Still, he's enjoyed a fair amount of encounters thus far. In "Civilization," Archer kissed the Akaali Riann in order to cover up a translator malfunction. The two shared a playful rapport that continued throughout the episode — even after Riann learned the truth about Archer and his crew. Archer also flirted with Keyla, a comely Risan vacationer in "Two Days and Two Nights," only to learn she was a Tandaran spy. In what could turn out to be a long-lasting entanglement, Archer recently showed signs of romantic feelings towards science officer T'Pol, with whom he shares a certain sexual tension. Interestingly enough, T'Pol has occasionally indicated that she might feel the same way — but the two have yet to actually vocalize these feelings to each other.

Which captain scores highest on the romance scale? Discuss on the Star Trek Message Boards.