Does he really love me or does he love his ex?

Right.. We've been together for about 5 months now. When we met, he had been broken up with his ex for about a month or 2 so it was pretty fresh.

Everything's been fine so far. And he did being up his ex a couple times at the start, but hardly ever now. And just as we both was starting to forget about anyone else, he gets a message on twitter from his ex's friend asking for his number. Then we later found out that the friend was with his ex that same day. His ex just won't leave us alone.

So we were talking about it and a lot of other things and turns out he's lied about a few things. Like sleeping with this girl who he was seeing before me. But it wouldn't have bothered me at all. And he keeps saying how now that he's with me he actually questions if he was ever in love at all. But some things he's told me of what she's done, if you didn't really love someone, you wouldn't have stayed with for such a long time.

I just feel like now, he's probably lied about so much. And I don't know what to do. I'm goin to talk to him about it tonight, but now his ex has popped up again, I'm thinking about her just as I forgot about her.

I've always been single to avoid all this hassle, but I do love him. I'm just questioning if I should talk it out with him and see what he says or just break it off?