Like the Ayurvedic, the Egyptian or the Indian massage, the Thai massage is a massage style which is not about a "happy end". Officially it's not about sexual relaxation but about the physical and spiritual well-being of the guest. But the niche of Thai massages is a little obscure, to be honest.
In its classic variation it's not about sexual enjoyment, but word on the street is that in some cases, you do have to possibility to reach a "happy end" at a Thai massage in Berlin.
Some say that tangencies of the private parts happen accidentally, but who believes that might also believe in Santa Clause. BERLINintim recommends to keep an ear to the street to find out where you can get what you're looking for.