You’ve said you don’t want him to spend time with his friend, so it does bother you. They took pictures then got food after, which seems perfectly normal if these photos were done around a meal time. If he didn’t cancel plans with you and told you about this photo shoot, I’m not sure what the issue is OTHER than your insecurity about him having female friends.
I say get over it. You're being controlling and over reacting
Some people can make your feel more lonely then if you were alone.
You’ve said you don’t want him to spend time with his friend, so it does bother you. They took pictures then got food after, which seems perfectly normal if these photos were done around a meal time. If he didn’t cancel plans with you and told you about this photo shoot, I’m not sure what the issue is OTHER than your insecurity about him having female friends.
Honestly, would you have wanted a relationship with this guy before finding out?