Is it wrong to warn my ex's love interest that he is a jerk?

[Anonymous]

Me and my ex dated for 2 months but he broke up with me because he said that he had a lot of things going on. After 4 days, he texted me to ask for sex and ofcourse I declined. I cut him off after that but then after 1 week of breakup, I learned that he's already seeing another girl and they even had a matching pfp. So I speculated that he may have left me to be with her so I talked to her and asked her when they met. I confirmed that he didn't cheat. I warned her tho and sent her the screenshots of my ex still feeling entitled of sex after just dumping me. I told her, "She needs to be careful of him because he doesn't take relationships seriously. If she wants a serious relationship, he's not the one. And that's because when I asked him again why he dumped me, he said that he wants to try other girls." Before I talked to her, my ex came to ask me not to say anything to her and I promised him that I wouldn't if I find out that he didn't lie about anything but then, I remembered he lied about loving me because if he really loved me, he wouldn't develop feelings for someone else in just 1 week. And that's when I told her because I don't want her to go through the same thing as me especially because he's really good in deceiving people. My ex told me after he found out that I told his love interest everything, that I'm very immature because I told her how entitled he felt even after we broke up. Was I really in the wrong position?

[Bram852OOO]

Dont feel bad about it, he screwed up and now is angry because you told the truth. However, i woudnt have told that he is not the right person to have a serious relationship with since things might turn out difrently this time around.

Just let it go now, you told his girlfriend now what you think was right too. Dont try to overpush it caus then you might just be misunderstood and look like you are the bad person.
Even if it does turn out bad for the other girl, people do make mistakes and sometimes do need to make them to be able to learn from it.

[Miristheiss]

Not wrong.
You've got to expect people will have the mindset of "consider the source" and not really give much credence to what you say. You are the "bitter ex"..."of course she's going to run him down".

[Asker]

Except I'm not bitter, I just don't want another girl to waste their time on someone like him. When my ex talked to me after the breakup, he told me he's not ready for a relationship and he was never ready but smh he keeps pursuing relationships.

[Anonymous]

It was only 2 months. You're taking it way too seriously. I understand you're hurt, but nothing he did makes him a "bad guy." He seems like most young guys. Warning the new girl only makes you look insecure and she won't listen to you anyway.

[Avicenna]

You usually shouldn't get involved in something like that unless he tried to cheat on her with you

[In_Trance]

yup, move on. worry about your own shit