Help?!?!

My boyfriend and I have been rocky but we kind of worked things out... but today and yesterday it jut felt off...he always said he was just “tired” if I asked him if he was ok but I could just tell something was up. But it also seemed like he was telling the truth but I really did have a hard time believing him. Like he was kind of quiet driving me home and didn’t really say much when I kept asking. And then...

when I gave him a blowjob and stuff things started to become a little better like when we BOTH started to get horny and everything started to feel ok... in a way

what could this mean?

(We are pretty sexual together we always do stuff when we can)

But is it healthy and ok when we do have fights and we work things out and then we do sexual stuff?

Does it help people loosen up?

Can being sexual when times are a little weird be ok to lose the tension?