Taking your post from Ralna's thread here as I feel it's more relevant here...

Our human brain will react to stimuli and sometimes, those reactions aren't "the right things" -- they're basically your impulses or "evil temptations". The best you can do is to minimise such stimuli by reducing the potential triggers;
1. Tell your existing matches, "sorry, I am currently committed to one girl so I don't want to continue leading you on for now. Bye"
2. Uninstall the apps

Simple isn't it? But here in this thread, you've implied that you're NOT looking to commit. It sounds contradictory because on the other thread, you said you want a "serious relationship". So think again what do you really want?
- polygamy/open relationships with several ladies?
- one committed relationship with your current sugar baby? (i.e. change to bf/gf relationship)
- maybe all this while you don't want to commit because you feel that she isn't someone you can settle down with? Why not?

Whatever you decide, I think you should clarify with the girl, otherwise it will be considered unfaithful/cheating/leading one on if you both have different expectations for your relationship.

Aiya... Usually I can catch trolls by copy pasted text or low effort posts, this time didn't trigger my alarm haha. Oh well I'll just leave it there..