Scottie Pippen filed for divorce after it became apparent -- at least to him -- that his wife Larsa was hooking up with Future ... TMZ Sports has learned.
There's certainly lots of smoke. Sources on both Scottie and Larsa's side tell us ... she's been jumping on Future's private jet, traveling with him to various cities, including Vegas last month. Sources from both sides also say Larsa and Future were very "cozy" recently at Komodo nightclub in Miami.
We've learned they met in August at the Haute Living Color Reveal Party in Miami, and have been seen at various places ever since.