How long should u wait after a marriage break up to start dating?

immediately.

6 months.

it depends on you. i agree with others when you feel ready if that is 3 weeks or 3 years its up to you. be careful that you are not just looking for a replacement . go have some fun.

if health permits immediate.

Depends on how you feel. If the divorce is final and it's a real relief then maybe you're ready right away. But if you're still stuck on the ex spouse, I'd be real casual about dating. There's nothing wrong with lunch or even dinner with somebody right away. But I think I'd be hesitant to get overly involved right away. Keep things casual for a while - maybe a year or so. But those are just my opinions. You need to do what you feel comfortable doing. There aren't any rules about this sort of thing. It's more a matter of what is wise and what is unwise.

Whenever you're ready.
There is no rule that says you have to wait so long or anything.

You date right away ..but only those you think may meet your standards... Hope you are careful as today this is ...can be quite dangerous so be very ,very careful. Things are not what they were 20 years ago! If you were smart then ... you know what is important now!

You need to heal from this break up. You are very vulnerable right now, and could easily be taken advantage of. Go out with friends and have a good time, but I would save the dating for at least a few months. You shouldn't be in a big hurry.

When you can quit talking about your divorce and your past marriage, then it's time to date. Good luck, and take care of yourself.

Date right away unless you have kids...

Wait until you feel that you are ready to start dating again

You at least wait until the divorce is final... then you wait until you feel you are ready.
Try getting your feet wet meeting new people by checking out some local groups on meetup.com

why you have to wait? No need. If is me I would went yesterday.

It depends on how long you have been having trouble with the ex. You might have said your goodbyes to him years ago and it was just a matter of actually leaving. It wouldn't hurt to at least give it a few weeks..

Agree with Biff - when you feel ready.

I waited 12yrs after my divorce thinking it was the best thing for my children, now their teenagers and making things a little difficult for my new husband.
You will know when your ready to move on,
personally I wouldn't wait to long.

as soon as you feel the time is right for you, for some it might take a few months to years for others a couple of days... for me i'm the type that likes to wait about 4 months just to make sure it is really over and there is no chance of getting back together

When your ready - it may sound a little cliche - but you will know when you get to that point. The point where you dont feel a hurt or wish or anything about the old marriage, when you find the right girl - and you are SURE - than hold on to her though!

Until you feel ready.

how ever long it takes man. sometimes it helps just to go on dates and try to get your mind off things...

it doesn't matter. there's no law stating a specific time frame to start dating again.