I feel awkward sometimes while talking to him.

Me and my bf fell into a fight few days back.I told him to stop smoking and he promised not to but few days ago it was his friend's bday and he did smoke again.... He has promised and broken his promise a lot many times so dis tym I got frustrated. He was trying to defend himself and the he stopped talking for like two days. When he came bck, I said that if he is ok with smoking then I won't stop him anymore as I am tired of fighting over dis. He said he will not do it again and will stop smoking for me,I said "don't do it for me" and then I changed the topic.
But while talking to him dat nyt I didn't felt the same love for him. I felt kinda awkward while talking to him, he got infuriated and I askd him to sleep.
Last nyt again while we were talking, I ws nt able to connect with him properly and when I told him dis, he got frustrated again,I said "it isn't my fault" , he apologized but I lost my mood and I asked him to leave den.

I feel guilty now ,I dnt knw why.
What should I do???