Can or should I ask my significant other to stop talking and to not associate with his ex? If so, how?

If you feel like it is affecting you then yes. Just be calm and reasonable. Have a couple of hours for yourselves and talk about it. Explain how talking to their ex makes you feel and make them see you are not being jealous, but asking for consideration. If your partner was a friend with their ex before they started dating, this might be a reason. Just talk it through. Good luck x

Rather than tell you what you can or should do I have some questions for you :) What feelings do you feel when you see your partner associating with their ex? Do you trust your partner? Have you discussed your concerns and feelings with them? If so, how did they respond? It's natural to feel uncomfortable in these types of scenarios but each one is different. It's worth exploring your feelings and understanding why they're there, and what the story is behind them, before proceeding in the situation. After all, we can't control others, we can only control how we respond. Wishing you all the best with it.

If your significant other's relationship with his or her ex truly bothers you, or hinders your relationship, you should definitely talk to them about it. Communication and honesty are key to any relationship.

This is a very tough topic but a valid question. If there is trust in the relationship then it shouldn't matter who anyone talks to because there will be no fear of infidelity or loss of connection through another. I have had trouble with this myself. My girlfriend and her ex have kids and they have to see each other everyday and at first this realm bothered me. I realized my worries were based in fear and as our relationship grew so did my understanding of the situation. I trust my girlfriend today so who ever she talks to has no bearing on my well being.

From experience this rarely goes down well but what's important are your feelings. If your partner talking to their ex is causing you distress or an amount of anxiety then you should be truthful. Hiding your feelings will only worsen the situation. If they love and respect you they will understand and take steps to reassure you nothing but friendship is happening. Remember, just because they talk doesn't mean anything untoward is going on.

Just speak out about this clearly with your significant other as this might destroy your relationship.

I think it’s okay to let them know how you feel about it in a claim way. I also think it’s important to make sure you don’t act as if you are telling her or him what they can and can not do. Sometimes they might not just know that they are upsetting you. It’s just difficult to understand why someone does something. I try to Be relaxed and explain that I really don’t like it but don’t think you should make them feel as if they are wrong for something they don’t even know is upsetting you.

You should just be open and honest. If something makes you uncomfortable you should be able to say that.

Tell them it makes you uncomfortable, and if they don't stop then they obviously don't treasure you.

It depends. If you're just jealous of his ex, then you should probably understand that your current SO might be offended if you ask him to stop talking to his ex. HIs ex and him are probably just good friends. However if you feel genuinely threatened by his ex, you can sit your boyfriend down and tell him how insecure you feel around his ex. The course of action should be decided by him after that. If he really cares about you, he'd understand your feelings.