He just told her he didn’t want it. Men are allowed to say that. He told her he didn’t want it, said they were too young, voiced his feelings. She could also voice hers. She chose an abortion. If he had said he wanted the baby, or if it had been a one night stand she never saw again, then maybe she would have kept it but because her partner didn’t want it, and she was probably conflicted, she chose abortion. She wasn’t forced.
Men are allowed to voice their feelings, as long as it doesn’t go towards abuse and coercion etc.
I don’t like Timberlake, but I can’t see how this is something he forced.