It depends on the kind of relationship. If you really love someone and possibly want to get back with them, then yeah definitely don’t be on tinder. Especially right away. Then again if it’s just casual dating or whatever and the relationship wasn’t serious then it really doesn’t matter what you do afterwards or how soon. Lots of different examples of right and wrong here I suppose and all depends on the situation. But yes if it was a serious relationship I feel like moving on too soon is definitely possible and wrong especially if you plan to patch things up later. The ex I had that got on tinder the night he dumped me literally asked me a week later to get back with him - after he was already sleeping with other people. I really loved him but after that I would never give him a chance again. Yuck.