Can you help me with my thought work please?

When boyfriend texts me « i love you » i think :
Is he sure ? Maybe it is a lie ? He says so but if he was with another girl he wouldn’t think about me. For the moment he says he loves me, in a few years he probably won’t.

Model
C boyfriend texts i love you
T for the moment the says he loves me, in a few years he probably won’t.
F anxious, betrayed
A text Him to ask him if he really does and ask him for reassurance
R I feel emotionally like a child, I have the same fears for months

I searching a way to go deeper and pass through that.

Thanks