Only just been seeing this new guy for a few weeks. We spoke on the topic on friends of the opposite gender and boundaries. Apparently, he sees no harm in letting female friends (he has a few) stay over at his and sleep in his bed, sometimes with him next to them. He recently did this with a girl before we got together (i've only just found out) and he insists nothing happened. I simply told him if he ever slept in the same bed with a girl, we'd be over. He seemed to understand, but I don't get his attitude. He seems so carefree about it all but it makes me feel really uncomfortable.