I remember asking for my two friends to be happy whenever together or apart and now they are back together in a loving relationship
I also asked for my friend who always worries and thinks the worse to get better and she is daily.
Recently my best friend had a long distance relationship and was thinking the worst due to the fact that they could never talk because of her girlfriend's parents, the situation seemed hopeless but I just asked for both of them to be happy and then next thing you know she got all her stuff back and now they talk way more and are both happy.
Also asked for a friend to meet someone special and next thing you know she did.
So I believe so yes. It's nice knowing your helping someone else achieve their dreams too.