He’s been lying to me! Should I send this?

Okay so basically, yesterday I ended things with my on again/off again ex bc he’s been acting funny this past week and my intuition is telling me that there is someone else....his baby mama to be specific. We’ve been on for the last 7 months. He’s been texting her aloooooot lately and I just have a feeling it’s more than “co-parenting”. His baby mama is the same ex he cheated on me with almost the whole 1st year of our relationship. So yesterday I expressed to him how I’ve been feeling and how he treats me and etc. so I told him we can just be cool and he agreed which hurt bc he’s always telling me how much he loves me, only wants me, and is gonna marry me but he didn’t even fight for me but he proceeded to invite me to dinner on Tuesday as friends...he even told me a few days ago that today on Valentine’s Day, he’s gonna be resting all day since sundays are his day off. That never sounded genuine to me, so I did some snooping today and I stumbled across his baby mamas tik tok and she was in fact in the bathroom at his dads house, wearing his boxers, and I notice on the sink was this hygiene bag I got him for Xmas and that’s what confirmed it for me...

I’m hurt..so bad. I’m hurt that I tolerated all this dishonesty and disrespect for so long hoping for a better outcome. I’m hurt that I ignored my intuition so many times bc I wanted to “trust him”. I watched the tik tok several times bc I wanted to be sure before I said something. So I texted him about 30 min ago and asked him “Wyd” bc I want to see what he says or if he’s gonna lie, he has yet to respond....then I want to send him the message in the inserted photo. Should I send this or leave it alone? I’m hurt and I want him to know I’m done and how he has hurt me. I finally have to move on...I have to. And the worst part is, he works in my town and start my new job next week at the same place he works at🤦🏾‍♀️

By the way...I JUST ended things yesterday and this showed that he already planned on lying to me about today and planned on being with her...plus it’s now clear that he has been seeing her this whole time just like my intuition tried to tell me.