really like my ex's best friend and he likes me back, what should I do?

basically they have been best friend's for years but I don't want to destroy their friendship. Me and my ex are good friend's but I've been told he still likes me but I really like his friend and he likes me as I found out when we both had a bit much to drink, some stuff happened and we spoke about it afterwards

There are times when you do have to think of other people's feelings and times you don't. A good example of a time you don't is when you go to a job interview and are competing against others, so you don't mind what you do as long as you get the job. This however is an example of an occasion where you definitely should care for someone else's feelings. Do the right thing and leave well alone. Act selfishly and you'll get treated selfishly in return. It's not worth it!

This kind of thing can really destroy someones feelings. It sounds as if your ex may be having a hard time getting over you so he needs his friends right now. If you pry them apart he's going to have a hard time ahead of him. Perhaps put it on hold for a few months and see what happens?

Selfish act.

There is no such thing as 'the one for me' or 'soulmates' or whatever.

Find someone else. There are people everywhere.

It's not that simple though, I'm not going to do anything that will cause them to fall out, but this guy is different to every guy I've ever met...

Selfish act. There is not such thing as different

You seem very pessimistic to people actually finding the one person they're meant to be with, it's a very negative tone...

Do as you wish

You mean she has your permission now?

basically they have been best friend's for years but I don't want to destroy their friendship. Me and my ex are good friend's but I've been told he still likes me but I really like his friend and he likes me as I found out when we both had a bit much to drink, some stuff happened and we spoke about it afterwards

Ye if you still care about your ex's feelings you should wait till he's over you. Could talk to your ex about it tbh.

In my opinion, everything happens for a reason. The fact that this guy is your exs best friend is a reason not to go there. If you were meant to be with this guy, you wouldn't have ended up with his best friend first. Plus, it's always better to start a fresh relationship with no baggage of exs lurking. It would also put their friendship under a lot of pressure, because its basically testing the loyalty between them, which wouldn't be a very good nice thing to do. Take it as a compliment that he sees value in you, but it's probably not a good idea.

BUT the choice is still yours.