how to let this girl on instagram im interested!?

[Travis]

Wellll, i've never been into the whole social media scene lol (facebook, instagram, twitter) but i have no friends as of now and just got through a breakup, so im feelin pretty isolated and lonely! but so i figured since im a very goodlooking dude and photogenic id just make an instagram and add a bunch of people, well this chick that i think is gorgeous she followed me and likes my selfie pics i post. what should i do to further our contact!? she has her snapchat posted on her profile, should i snapchat her? or is that kind of stalkerish seeing as how she doesnt know me... sorry if this sounds weird, im new to this stuff >.< haha
@joe you cant private message anyone on instagram.. and that would be fcking weird just to comment and say "im interested in you" lmao

[Joe]

Say, "I'm interested in you."