would it be weird to text her? what would i say?

[Mike]

so im at a university and i was selling tickets to a school event on a facebook group designed to assist people in buying/selling tickets. i ended up selling it to a girl who gave me her phone number so that we could meet up. when she picked it up, i was attracted to her but we did not talk after that, we each just went our own ways. now that i have her number, i kind of want to give it a shot. what would i say? or should i just move on because it would be kinda weird to text out of the blue? thanks!
she gave me her number so that we could find eachother and exchange tickets so thats not really a sign, but not a bad thing, just a null point