Anyone have thoughts?

I just started seeing this guy that I’ve liked for a long time. We went on a few dates and just recently ‘hooked up’. He fingered me and went down on me til i came but never stuck it in.. it still felt very much like sex he was moaning and grinding on me but didn’t really seem to be into me touching his dick... just about my body and me. Same thing last night when i came over.. I’m definitely not complaining at all it just seems odd that he didn’t actually have sex with me or want me to pleasure him back. Doesn’t that cause blue balls? I’m not comfortable enough to ask him about this yet