Am M 24 and have no hobbies really hang out at home and have nothing but my laptop and the television and a textbook really there to occupy me. Do you have an idea maybe?
Reading, cycling, jogging, fishing, maybe making music with a laptop, painting and so on. Is always a lot to do (my laundry for example;)) find out what you enjoy.
James Bond would know enough about his spare time! ; -) Without a hobby or friends is certainly the most boring.
Go to a gym and power up. There you will find like-minded people with whom you could do something.
See that you're making a girlfriend / wife. Then you no longer need hobbies. It gets you up to speed. Her hobbies are your hobbies.