Watched my gf get her mouth pumped by her ex [cuckholds perspective]

My gf decided to tell me the truth that she’s been hooking up with her ex because I don’t put her in her place or make her feel like the Bitch so she eventually convinced me to let him come over and watch a real man mark her as her bitch … he comes over she’s in my favorite outfit of course and her ex had work so it had to be quick so he made her get on her knees and pulled her hair back and told her to “open wide “ she opens he slides his cock him and behind holding her head in place and fucking her mouth as she moans in submission he says things like “ya this pretty mouth belongs to daddy “ and “ya bitch your swallow all daddy’s cum “ and ngl it was hard to watch but seeing her in full submission to him was a twist he pumps faster then all of a sudden he pushes it deep into her mouth one final push and groans ya swallow my fuckin cum bitch and you can see his cock twitch in her mouth pumping his cum into the back of it And I see her neck muscles start swallowing and that’s when I knew he made her his bitch now she don’t belong to me then being next to her all day knowing his cum is in her belly made me feel like a huge whimp