You are on the bus or the tram (public transport in big cities in Europe, idk if the US has that).

It is an afternoon on a weekday, so not too many people, but not empty either.

Im sitting on a seat, A super attractive girls walks in through the door closest to me. As she walks in we lock eye contact. There are many empty seats but she sits on the one across from mine, nearby.

She was on her phone the entire time, ocassionally throwing looks to my side.

I froze and couldn't think of anything to say, especially due to other people around. If we got off the same stop I would have approached outside when it's just us.

What would you do in such a scenario?