I was sick this weekend and my gf spent time with me and my kids. We had fun she even kissed me multiple times, even though I stated that I was sick.

However, this morning I was feeling better and tomorrow I have to leave the state to do medical work. I rolled over, to kiss her and she stopped me and told me to not get close. Naturally, I was offended but, went with the sickness possibility. So, I told her my contagious state has passed and it's highly unlikely that I'm infectious... plus, that didn't stopped her this weekend. She argued that otherwise, and I just got insulted.

I went to work to do all the things I needed to do before leaving. Because I want giving her 100% of my attention, she decided to be all over me hugging me, kissing me, etc...

I was already unhappy and she ended up accusing me of the one being non-affectionate

I've commented here about how my gf treats me with sex a year ago. As she often rejects my advances unless, she finds out I've masturbated or will plan on to. I get blamed for taking to long or not getting it up because I already took care of it. Sadly, this thing she has is still going on in more ways than one and I just masturbate regularly even though she's offended but, has never accepted my offer for sex when I'm actually horny. Again, she does this in other ways to. Rejecting or being mean but, if I do the same... even jokingly... I'm often spoken to like I'm doing it to just get back at her. She's never at fault.

TLDR: What should I do with a partner who has been regularly rejecting my advances in intimacy unless, I "do the same?" This is really annoying because, it seems like a game and that unless I treat her like how she treats me (which is like shit)... she doesn't like to reciprocate intimacy.