Something along the lines of:
sf::floatrect floatrect1;
sf::floatrect floatrect2;
//
// SET FLOATRECTS COORDS TO SPRITES
//
if (floatrect1.Intersects(floatrect2))
{
//COLLISION
}
if there isn't an intersect function for bounding boxes, write your own using the coordinates of the floatrects.(I didn't write down the specific code because I didn't have time, also you might not know SFML/C++)