Sex with new boyfriend

I've been seeing the same man for the last three months and we have an intense chemistry but, every time we have sex he pulls out and jerks off. I'm not sure what the problem is and why he can't finish inside of me or pull out when he's about to cum. I'm starting to get a complex. I figured I would wait for the right time to address this issue with him, but I don't want to give him a complex. Any advice would be much appreciated.