This can be a reference to:
a) great or intense sex or other sexual acts
b) can be a broader reference for falling for
someone, becoming captivated, or falling in love
(for emphasis, often followed by adjectives such as bad, hard, somethin' crazy, somethin' aweful...etc)
a. Damn baby, you really put it on me last night!
b. Girl, I don't know what it is about him, but he's really gettin' to me. I didn't think I'd fall for him, but he's really put it on me!