Depends what you mean by pushing things to the limits?
Are you respecting the other person when pushing things to the limits? or just seeking thrills for yourself? It takes two to tango and if you want a lasting relationship remember it involves trust, love, and respect. There is no relationship without these things. How about work on getting to know the other before you try for thrills and find out what the other likes too so you both can develop a good relationship based on mutual respect.
take care.