Video: Quantasia Sharpton says she & Usher have a sex tape

Quantasia Sharpton says that not ONLY did she and Usher have sex after he was allegedly diagnosed with herpes — but she got their acts on tape.

She also claims there’s security footage of Usher at her hotel. 

According to TMZ:

Quantasia also said her rep, celeb attorney Lisa Bloom, is attempting to subpoena hotel surveillance video which she claims shows Usher going to her hotel room in 2014.

As we reported … an ex-hotel staffer claims she saw Usher walk into the Days Inn lobby in Atlantic City where she says Quantasia came down and took him up to her room a little after midnight. Usher’s denied this, saying he couldn’t have been there ’cause he was too busy falling in love with his now-wife … plus, Quantasia isn’t his type.

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