I heard it in Claire's today. It played before a pop song sung by a female.

I think it's a popular song because I heard it a lot, just after long periods of time so I can never find it!
The singer is male and his voice is soft and sort of feminine. It's similar to Owl City, but I don't think it is.
The lyrics are hard to distinguish (if that helps identify the song?). I can usually remember one line, but then I keep forgetting it.

I think it's a generic romance song.

I also heard it in Kohls during the summer.
I heard it elsewhere too, I just don't remember where.

There's very little, if anything, to go off on, so I apologize for that.
Thanks for the help!