She was sexual harassed into give it in sounds pretty rape like to me, she even tells how much she loved her fiancé and how she cut off with him for not feeling worthy, she refuse multiple times until she couldn't.
Later, once as she felt she had nothing more than him, she began to relay in his power and vented his frustrations on her coworkers.
I personally think that sexual harassing someone like that and using their status and power to make someone vulnerable to give in, is some form of rape, while she might not be screaming for help while doing the act, that was product of him using his power on her, I don't know how would that work legally, and that may change depending on the country, morally and ethically is what is being debated here.
I personally don't think it looked like and aggressive flirting and sweet words as some suggest, as much as an abuse of power and status, she was in a position where she could not easily refuse.

wait a minute everyone is talking about rape but she wasnt rape BUT SHE GIVE IN , into lust, and the flavor of power, and the sweet talk of the fucking old man. She did have sex with him cus she wanted power.