Relationships

How should I react to this situation?

I know that my boyfriend is back talking to his ex/mother of his two week old child. They have a new born together which he was honest about when we first started dating back in August. He told me how he had a pregnant ex who left him. I won’t get into why she left. He even told me when she went into labor two weeks ago so because of his honesty I didn’t think he would betray me like this. l have been through his phone and he’s been texting her as if he wants them back together. He’s not texting like he just wants to co parent. He has told her he wants his family back and would do anything to get it back. He has apparently even sent her flowers. He texts her and their son GoodMorning everyday. He tells her he loves her and how he would I do anything for her and their son etc and I can’t even say anything because then he’ll know I have been through his phone.

How should I react to this situation?
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