Won't go into details but I'll mention this girl had a crush on me for like a year until I went to another HS, so I don't know about now.

What I want to ask is if I were to ask her out, should I DM her on Instagram or should I wait until we meet again and I do it then (we met like a month ago and we will again, but in like 2 months).

I don't have oneitis but I want to know how you would approach this. It's not like I won't be in this situation ever again.