Is this appropriate to send to boyfriend.

[Lou780]

My dd is 21. She has asked me to post this here for advice. It's hard forme to give advice as I was cheated on myself so iam probably bias.
Her boyfriend is 21 also they have been together 4 yrs. Live together for a year. Live each other very much and have plans for marriage.. Babies in future etc.
He has an ex coworker also 21. They worked together last summer for 3 months.. And she now lives 200 miles away for the next months at least. My dd has discovered they have been Snapchat ting several times a day for weeks. Boyfriend never mentioned this. A couple of days ago this girl sent him a ticktock of her dancing.. Thrusting the lotto a sexy lyric song. He laughed it off and says they are just friends. Dd however is devestasted and can't come to terms with this.
She feels it's crossed a boundary and wants him to stop messaging her. He refuses and says she can't stop him having friends and that she is being controlling.
Thoughts please. Dd will be reading and really needs wise advice.

How would he like it if it was other way around ? I would not be comfortable with it no

I'm amazed at all these responses. Yes he's entitled to friends but if this really was innocent why was he keeping this 'friendship' secret.
That in itself is enough but the sexy dancing and the advising him to take a break from his relationship are the kicker.
Your daughter knows this is wrong and should listen to her gut.
This is a good lesson for her to get while she's young (don't mean this to sound patronising) sometimes you have to stand up and walk away because YOU know it's right for YOU.
You wont always get reasonable responses from people and recognizing what's unacceptable to you and being able to stand up for yourself are important.

Put aside the dancing video for a second... the fact that this guy claims to be in love your daughter, and is ok with another girl telling him to dump her is the problem. He should be telling this other girl to mind her own damn business and defend your DD. But no.. they remain "friends" and your daughters' feelings are pushed aside. Based on that ALONE she needs to get rid.