New guy

Kelsie
So there's this guy who sits next to me in math class and we've been flirty friends for the past couple of months. He's had a pretty long term girlfriend so I knew he was off limits. But a couple days ago he asked for my number and we started texting. The texting is very fun and flirty and there are no awkward moments. I got worried because I knew he had a girlfriend, and I didn't want to be the "other woman." But then I checked his ig and found out that they broke up. We seem to be very flirty over text, but is it too soon to move things forward with him because he just went through a break up? I don't want to step on any toes with this, meaning I don't want to look like a bitch in the perspective of his ex