selflish
To do something selfless for selfish reasons.
John is so selflish, the only reason he helps out at the soup kitchen is because he wants to get in Jane's pants.
Selflish
An action that someone does completely with their own self-interest in mind, but they try to convince you they did it your benefit.
"Hey I know you need to start your diet so I ate all your junk food."
"Wow... very selflish of you."
"Wow... very selflish of you."