Angel
When she first saw Angel Cordelia was attracted to him, however, he was interested in Buffy. After she moved to Los Angeles, she began working with Angel and the two became friends. When Angel slept with Darla and lied to her about it, she felt betrayed by him but she forgave him after he bought her a new wardrobe. In season 3, she realises that she is in love with Angel and goes to meet him to tell him, but is taken to a higher plane instead. When she regains her memories, she tells Angel that they were in love, but her possession by Angel prevent their relationship from happenning. In 'You're Welcome', Cordelia kisses Angel as a final goodbye.

Mitch Fargo
Cordelia dated him in 'Out of Mind, Out of Sight' and was to reign as May King beside her, however, he was beaten by Marcie Ross.

Kevin Benedict
They were dating in 'Prophecy Girl' but he was murdered by vampires on the day of the prom.

Richard Anderson
A very rich college fraternity boy, she believed that their relationship could be sustained on fake laughter before he offered her as a sacrifice in the episode 'Reptile Boy'.

Jonathan Levinson
They are seen at the Bronze together where he forgets to get the extra foam on her drink. After Cordelia breaks up with Xander, Harmony teases her that Jonathan could make a potential boyfriend.

Devon MacLeish
Unhappily dated Cordelia in 'Halloween'.

Xander Harris
Cordelia originally tried to make Xander's life miserable, however, after being trapped in Buffy's basement in 'What's My Line? Part 2' they kissed and although Cordelia tried to deny her attraction to Xander, she couldn't. In 'Bewitched, Bothered, and Bewildered' she broke up with Xander after being outcast by her friends, but took him back when she realised she no longer cared what they thought. In 'Lover's Walk', she found him kissing Willow and was impaled on a metal bar, when they broke up for good. After he bought her prom dress for her the two reconsiled their differences.

Wesley Wyndam-Pryce
After he became Buffy's watcher, Cordelia shamelessly flirted with Wesley and they shared an awkward kiss in 'Graduation Day Part 2'. They met up again in LA and she kissed him to try and get rid of the visions, but it did not work and the two became friends.

Allen Francis Doyle
Doyle was attracted to Cordelia from the moment he saw her, however, after an outright dismissal of any romantic feelings towards him, Cordelia began to appreciate Doyle as a friend. As he was about to sacrifice himself, he kissed her and showed her his demon side and gave her the visions to help Angel.

Wilson Christopher
A Hollywood photographer who impregnated Cordelia with demon spawn in the episode 'Expecting'.

The Groosalugg
They met when Cordelia was taken to the Pylean dimension where she was made a princess. Groo was meant to mate with her and take her visions, however, Cordelia refused as she didn't want to lose her visions. When the government collapsed, Groo found a way to get to LA and sought Cordelia out. They begin a relationship and are able to be intimate after Cordelia takes a potion which prevents her losing her visions. Groo realises that Cordelia is in love with Angel and lets her go.

Connor
While Cordelia was under the possession of Jasmine, she had sex with Connor and she became pregnant.