should i take a chance?

so i’ve been texting this girl for a about a week and i definitely like her. but i’m not 100% sure she likes me. however, i’ve asked some friends and they’ve agreed that if she wasn’t interested, she could’ve left me on delivered or ended the conversation by now. with valentine’s day coming up, i wanted to possibly go and ask her to be my valentine but then again i don’t want to assume she likes me just because she’s texting me. what should i do? (background info: we’ve known eachother for a few months but only recently started having one on one conversations)