Need to vent.

So my fiancé and I decided we needed some alone time, well I paid a babysitter and we have spent most of today, if not all together. Well, when we went out to eat, he mentioned something about his friend from work coming by, but the later it gets, my fiancé seems to be feeling some type of way because he’s not here.. I can see it in his face, but he denies anything being wrong. Idk. I’m trying to ask him what’s wrong, because I be knowing when something is bothering him, and he keeps saying nothing but he’s giving me no eye contact... but idk. It’s crazy to me how that can bother him so bad.. especially since he claims to want to spend so much time with me.. I’m literally sitting right next to him and he rather be on his phone, watching YouTube or something..