Responses
It was likely offscreen and implied. When she was going through her memories of him one of the pictures have them sitting on the couch together and the way he is touching her is suggestive. Likely they have been sleeping together already. Not rape but consensual. In other words I think the author pulled a Horimiya and didn't make a huge deal out of it.
http://www.mangago.zone/read-manga/skip_beat/mh/c230/pg-27/
1st I am surprised that they finally updated ssoo fast. 2nd wtf just happened and 3rd When did they have SEX. Dont you think you would know when you had SEX or Probably RAPED. That shit hurts ( doesn't it?????)