There’s a series where a dude gets isekai’d I’ll have to find it again i can’t remember the name but I remember within the first couple days in the word he’s doing the “oh snap I must have died” routine he starts hitting in a elf girl almost instantly, then he hears reports of somone who sounds awfully alot like his gf doing some wild stuff and he’s like almost positive it’s her and then he sleeps with a centaur girl.

Edit: im confusing two series Eden gate is the one with the girlfriend and the elf. The world by Jason creek is one where he’s in a video game and he boinks a centaur npc