What does it mean when I guys says "we'll see" when I asked him if he wants to hang out?

P̶o̶s̶i̶t̶i̶v̶i̶t̶y̶.

I asked my guy friend if he wants to hang out and he asked me when and I said whenever. Idk if by "we'll see" he means no. He asks me to hang out kinda a lot and I always say I can't cuz it's true I can't! always when he asks me I can't and I really do feel bad about it. He prob said "we'll see" cuz of that tbh idkkkkk I've only hanged out with him once he's prob like "well now she wants to hang out" 😂

What do y'all think???