1. Lay the ground rules out up front and make sure you both agree on them.
Don’t coyly play it out and see how it goes. If all you want is a FWB relationship, then that’s what you’re agreeing to. No one likes getting hurt, so if FWB isn’t something you think you’re capable of because you get attached too easily, don’t put yourself in that situation. It isn’t worth it and it isn’t for everyone. But you need mutual agreements from the start if you want it will work out.
2. Be careful who you choose your FWB relationship with.
Obviously don’t go for someone who you know has feelings for you, or you get a slight clue that they have feelings for you. And don’t agree to be FWB with someone you have feelings for. That’s surely going to lead you to trouble. Go for someone who might be more open about sexuality so it doesn’t seem like he could easily be attached and hope it could lead to a relationship down the line. Men might not seem like they want relationships, but they are just better at hiding their feelings.