I don't know what to think about this

Jessica
My boyfriend decided to go to his friends house who happens to be a girl and get drunk.. He stayed the night at her house with some other friends...he told me about how this girl the ones house he stayed at used too like him...I just don't know how to feel am I over reacting he said he slept on the couch but still I just can't help but feel like something could be going on... Am I over reacting