What are you confused about? Don't hide behind "confusion"; either stay or leave but don't "play" with yourself, him, his other relationships, etc. It is not harmless, especially to yourself. I'm sure his other gf's are wondering what happened too (or they wouldn't be stuck with him and pregnant). Whether or not they wanted to be pregnant; do you want a sexual relationship with this guy or not? He doesn't in any way sound like he just wants to "chat" and do Bolly and nibbles.