Totally. Hit her up and see if she wants to catch up. Maybe go get some food or watch a movie, or go hiking. Depending on how that goes maybe that can grow into dates and then just keep doing fun things. Maybe this time she will have feelings for you. Ya know, keep doing the dating stuff, surprise her with flowers or gifts occasionally. Get a boombox and stand outside her house. That kinda of cheesy stuff. Now fast forward to 5 years. Now you're in some pretty serious relationship type shit. By now you've probably moved in together, got a cat or a dog along the way. But you being the great boyfriend, haven't stopped doing nice things for her, so you take her on a super romantic date. You get down to that 5-star restaurant and as you fine wine and dine her, you hold her hand and look into her eyes and smile. Maybe whisper some sweet'nothings to her. Maybe she feels after five years of dating, you might pop that question. You look at her and say "I feelings for someone else" and leave her with the bill.
More or less.