Long but worth reading!

I need help. Badly.

Well the guy I like knows about witty.

So one day while we were talking he said, "What would you do it I was Steve?"
I said I would marry him and he instantly said "Really? Well then I'm Steve."
We both laughed it off and I thought we were kidding around,
but yesterday when I was hanging out with him he brought it up again.
He said, "OK, so since I'm Steve, we have to get married."
We were with my friend whose a girl, and she was confused (she doesn't know witty).
I held out my pinky and said, "25 years old, no matter what, we have to get married."
"Why 25?" They both asked.
"You're old enough to be taken seriously, but young enough to still have fun."
He nodded in agreement and we hooked pinkies.
Awww!!! I know, I know.
 Now this is the part that confuses me.
We held pinkies, but then he grabbed the other girl's pinky too.
At first just laughed and said, "so I guess we're all getting married?"
He laughed and we all let go. The day went on, and it was eating me alive.
Did he put his pinky around hers so she wouldn't feel left out?
Did he do it so I knew our promise wasn't serious and he doesn't like me?
Well, now I'm completely going out of my mind trying to figure out why he would do it.
Can you please please please please let me know what you think?
All my friends say he likes me, but I need like an outside source to judge,
So just leave a quick comment telling me if you think he likes me!
Just one little word saying whether of not he likes me, yes or no.
If you comment, I will follow you, I promise(: