I'm so upset 😭😭

I'm 25 and my bf is 26, lately I've sorta felt like he doesn't love me. We've been together for around 6 months. My first sign was last week when I asked him to bring breakfast over when he visited but he told me "he had to lend his parents money" but I think he's lying to get out of spending money on me.

I was feeling a bit sick today (headache and sore stomach) so I asked if could come over for a little and cuddle but he said no 😢. He said he has to study bc he has something tomorrow (he's in uni) but it's only a half hour drive to my house and I only wanted him to stay for 15-20mins but he still said no. I found out that today he went to a "study group" but when I asked who was there he just said "some guys in my class" and I'm so upset bc I'm sure he cheated on me.

Someone please help, I don't know what to do!!