Getting Off the Rollercoaster!

[addie]

H called a while ago, spoke to S and then asked to speak to me. He was talking normal, like "old times", telling me all about his day. I listened and was pleasant. I don't know how I managed but I pulled it off. Apparently S asked dad if he was coming here during the summer. H then told me it might be easier if we both went there (second time he's brought this up). I didn't say anything either way. I don't think I can pull it off if he's still lying and even worse, possibly being promiscuous. He said he's doing a lot of thinking about things and ended the call saying he misses me a lot. I don't understand how he can be doing what he has when he's telling me these things. How can I believe anything he says to me?

What do I do about his wanting us to get together before the end of the summer? On the one hand, trying to reestablish the connection between us may be good. On the other hand, he continues to be dishonest and I fear he is seeking out other females for companionship and/or s*x.
Any advice is greatly appreciated.