Love the one you're with??

This is so much easier said than done. Is it even the right thing to do? I am really confused about this one right now. How can you really fully love when your heart is in torn between two different places? What does that even look like in regards to the gospel? I am chewing on this a lot and perhaps I should just let God work it out instead of trying to figure it all out myself. Either way, this song is in my head and won't leave.