def not a deal breaker! I'm asexual so I have some weird boundaries and I was friends with my partner first so I had mentioned how I was willing to kiss ppl or do oral but didn't really like it and when we got together he immediately told me that we wouldn't kiss, I wouldn't give him blow jobs, or anything else I wasn't 100% into and we've been together for over a year and even though he likes both of those things he's stood firm by those boundaries