Turned off

Have you ever been in a relationship with someone (3+ years) and suddenly it’s like everything they do makes you irritated and you’re just completely disgusted? My fiancé has always had this nasty attitude, and I have been completely blind by it, like I’ve been just accepting it and trying to reason with how he is.. but lately I’ve just been turned off by it. He has bipolar depression.. and it seems like ppl with that disorder are hard to love 😒