I have fairly rich experience communicating with girls from dating sites. There were very romantic meetings, and sometimes just the most amazing.
For instance, we had had relations with one girl for more than 2 years. It was a sweet, beautiful, and romantic relationship, but unfortunately, it didn't work out. However, we were good together. After that, I began to meet girls from such sites more often, and recently one madam, who is several years older than me, offered me BDSM and anal fisting.
I wasn't ready for that, it's true. But why not? One life, live it up. Moreover, I once had experience with that. However, if someone also receives such an offer, keep in mind that porn actors prepare for filming, and you need to prepare in real life as well. In addition, be sure to purchase a special fist ointment, which is of great importance when using sex toys or fisting. You can get the most out of the process if you do everything right.
Therefore, you can find both one-night stand entertainment and serious relationships on such websites - it depends on whom and how you are looking for.