Wait for me here, I have some other things to do first.

I was open to the option, and wanted him to know I was seriously considering it.

"I still need to do a few things here before we leave, but I'm definitely interested." I told him, not wanting to let him down.
"I understand. The party might be boring but our friends aren't." He smiled at me.
"I'll see you later then."
"Can't wait." He said, hopeful.