R&B oldie I just can't find

[Sammy B]

It sounds like my favourite R&B group 'Surface' but since I've never been able to identify it I can't say if it was sang by them or not. Should someone out there have an idea please help me on this.

So many times
I try to tell you
How heavily I feel...
Why does sunshine seem much brighter
Why do clouds refuse to rain
Why does every single love song...
The answer to the question
Because of you...