Husband has changed.

He claims he is in love with me, but sometimes I swear he would be so much happier without me. There is so much tension between us at times. I don't know that he has ever cheated or anything like that, but maybe he is just not in love anymore. I know it's possible. It happens. But I can't ever get a breakthrough response from him. We just end up circling in our arguments. Vent over.