<human>: My boyfriend and I have been together monogamously for 6 months. We dated off and on for about 6 months before that. 

Lately things have gotten worse, and I am not happy in the relationship. I have considered ending it because of a few things-- we're arguing a bit more, his flaws annoy me way more than they did at the beginning, and our sex life has drastically decreased. I've been in LTRs before and did not experience this plateau or whatever you might call it. I cannot tell if we've just lost a bit of the excitement/happiness that comes with a new relationship or if we just aren't a match.

I've tried talking to him about it. I told him that I've been doubting things and started pointing out things that could be better (e.g., "It really bothers me when you do x, could you please try to work on it?"), while also being open to/asking for similar feedback from him. Nothing is getting better though.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Been with boyfriend 6 months. Can't tell if this is just a normal slump after the excitement of a new relationship or if we should part ways. Help!