scroll through phone
locate single woman
text: hey, we haven't spoken for a while, but if you aren't busy tonight i'd love to take you out for dinner and catch up. every girl deserves to have a nice time on valentines day, so if you're interested, i'd be happy to set up a time and make a reservation. otherwise, no hard feelings and have a great night :]
it's complete bullshit, but it's flattering, it's non-threatening, it's sweet, and it shows that you want to do something for someone. you've reminded her that she wont be having a great night when she's alone and may as well have a nice time with you, you've expressed your seriousness by mentioning a reservation, and you've put the ball in her court, giving her the option to either get treated like all girls want to be treated or be lonely.
what more could a girl want?
trust me, it'll work.