Eh, that just sounds like someone who was looking for a different type of group. I wouldn't even register that as quirky, just trying to include erotic elements into a game and group that didn't want them. Which is generally just a person with poor understandings of boundaries.
But, see, if you hadn't said "intimacy" and instead said "love" or "marriage", I likely wouldn't even have a clue why this was a problem. Centaur Clerics are pretty basic after all. The devil is always in the details.
We've currently got a player in a game who is playing a myconid druid, not an issue. They love fire. Also, not an issue. They are playing them as a 5 year old with no sense of danger or understanding of combat, while we are trying to play a political game of intrigue, family drama, and rebellion. THAT has been the problem, because they have caused disruptions with their actions.
A young myconid druid who is a pyromaniac is a quirky character I am just fine with. A character who runs to get a hug from the BBEG because they don't understand the concept of fighting, causing the other characters to rush after them, restrain them, THEN continuing fleeing because they are good people who can't leave a literal child to be turned into mulch... that was the problem.
But, this gets back to my original point. It is never these grounded characters like "this player was looking for a game with more erotic elements" or "this player took playing a literal child too far" that people use as examples. It is "Half-Kobold Half-Purple Unicorn" as though that is how these things actually go.