What to do in this situation

So last Thursday, after leaving his house, his ex-grilfriend [from august], of whom I am friends with, texted me saying So i heard ya'll were going out, when did this happen. I would had just ignored it, but I kindly answered back to her. The only problem I had with her asking if the fact they broke up in August and she's had like 5 boyfriend's after him...and they went out for like 2 weeks cause she got back with an ex of hers.

That night be and my bf were talking and he asked me how many bf's i had had, i said 2 including you. He then asked me if I was a virgin, I told him I was. I thought that was weird, since he could had asked me in person but I figured he might had been embarrassed.

So since then, it seems he has been ignoring me, I thought he was mad at me..he said he wasn't but pretty much yeah.
I asked him if he wanted to come over to my house today, as i've met his family multiple times and been to his house. He said he would if he felt good. I talked to him and it seemed like he completely forgot or just didn't want to go. Later on he told me he's sorry he couldn't come over. I told him I could of came and got him, then he told me he had a headache.. :/ He seems to not want to talk to me, though today was the most we'd talken since Thursday.

So, any ideas on what might be going on with this situation?