Bachelor Ben Boots Lindsay!

Affleck wants to play field after rehab.

LOVE rat Ben Affleck has kicked rebound galpal Lindsay Shookus to the curb — and friends are saying the booze-troubled Batman hunk only used the beauty to make it look like he was cleaning up his act!

“Ben’s made it clear to her it’s over!” dishes an insider. “This was basically a rehab romance. Ben seduced her and paraded her around with him. Being in a serious relationship made it seem like he was getting clean and sober.

“The relationship served its purpose--with her, he looked less like a boozing bachelor.”