I'll still add some thoughts. I don't think it would be very healthy to try to control the feelings, but I find the thought of letting myself love freely a bit scary. I'm afraid of hurting myself if I let myself love somebody who doesn't love me, for example.
But that's just it. I don't KNOW it will hurt, I just assume it will. But now that I think of it, I don't know. I mean, when I had a big crush on one of my friends (who didn't feel romantically towards me, and didn't know about my feelings) and he was seeing someone else I felt only a little hurt and jealous, and the feelings passed fast. After that I was just happy for them, even though I still had strong feelings for him. I think it's very similar to what I might experience if my partner found somebody new. It doesn't really make much difference if I am romantically involved with them or not, I can still feel happiness in their happiness and be confident that I am important to them in other ways.