Johnny Weir's Husband -- He Cheated on Me ... and Forced Me Out of the Closet

Johnny Weir's estranged husband just filed legal docs, accusing the Olympian of repeatedly cheating on him and treating him like a lap dog.

According to Victor Weir-Voronov's legal docs -- obtained by TMZ -- Johnny allegedly committed multiple acts of adultery, including having sex with a Chicago club owner and sexting with a porn star.

Victor says throughout the marriage Johnny was cruel to him ... forbidding him from bringing Victor's dog into the marriage for fear it would take his attention away from Johnny.

Victor also claims prior to meeting Johnny he was living his life as a heterosexual man and was struggling with his identity, yet he says Johnny forced him to come out of the closet.

Victor claims Johnny married him because he wanted to do a new reality show and felt a Georgetown-educated lawyer would be a compelling story line. Yet Victor says Johnny treated him like an errand boy.

As for the housekeeping stuff ... Victor is asking a judge to force Johnny to return some of the items the skater took from their apartment, including

-- Crocodile Celine bag
-- 40 Balencia bags
-- 20 furs (including a $125K sable)
-- Green Hermes shoulder Birkin
-- Orange Hermes 35cm Birkin
-- 12 Chanel bags

And Victor wants an order forcing Johnny to return Tema, their Japanese Chin dog.

He also wants temporary support and legal fees.

A source connected with Weir tells TMZ ... the property Victor wants back was Johnny's before the marriage ... which the source says "couldn't be more obvious from the fact that they are purses and women's furs."

The source says Weir "categorically denies" the adultery allegations.