Can you repress feelings for someone that come to surface later?

well if you stayed friends then its easy to suppress your feelings becoz you havent "lost" him you know you can have him back whenever you want. so maybe now hes showing interest in someone else/less interest in you and you feel like you're losing him? coz lets face it if you dump someone and they stay friends with you (weak fools), you have them in the palm of your hand