What to do about boyfriend, breakup or no?

This is kind of hard to explain but the guy im currently dating, well we broke up for a few days just a week ago after dating for 3 months. he brokeup with me because he thought I didnt trust him but then a few days later he told me to call him and I did and he told me hes realized how much he really does love me,cares about me, that he was wrong and sorry and he wanted a second chance. So I gave him that chance. We made plans to hangout on thursday, but then he totally ditched me without telling me. He hasnt called me or texted me since then, and hes been calling me a lier behind my back. I swear I havent lied to him once in this relationship. If anything he’s the lier. I love bryce with all my heart, he means so much to me but I dont know if I can be with him if he ignores me and all of this. When we’re together though, its so AMAZING. I wish I could stay like that forever but when we’re apart its just a big mess. So what do you think I should do? I dont want to breakup with him because I dont want to seem like a b*tch after giving him a 2nd chance, but it doesnt seem like anything is going anywhere or getting better. Please help.