I'm looking for a song but only remember the following details:

1. The music video was of a girl (early twenties, black hair, white or possibly latin-american, tanned) in a black bikini dancing / walking on a beach while singing.
2. Year: somewhere between late 90's / early 2000's. Could be a bit later...
3. Genre: pop / techno with a "happy vibe" as it is on a beach (maybe miami?) With a bit of a tropical feel to it.
4. There is a guy in the music video but he doesn't sing. Only the girl sings.
5. This song was on summer hits / summer mixes disc compilations.
6. The lyrics i remember goes something like this:"I keep on thinking of you, what you're doing, where you're going..." But I could be wrong as it was a long time ago.

I have the melody in my head but i just can't find it anywhere and it's driving me crazy!

Please help!!