Guys, Is he losing interest?

I feel like my boyfriend doesn’t want to pay for anything anymore, at the start he was taking me to all sorts of cute places, now he tries to spend as little as possible. I understand that some people may have money problems so i’ve been suggesting doing stuff that don’t need money however recently he wanted to go shopping for himself so i don’t think money is the issue.

I’m not sure if i’m overthinking it but i know that when a guy likes a girl he doesn’t mind spending money on her. I try not to compare but my sisters boyfriend works extra shifts to get her tickets to different concerts and to nice restaurant. They split from time to time but most times he will pay for everything. Any thoughts?

Updates
1 y
I forgot to say but when I was going to make him chicken wings, and we went shopping to pick it up, he went to get something else just to not pay for the chicken lol
Guys, Is he losing interest?
Post Opinion