Go travel the world while freelancing before you get in another serious relationship. You only live once and a whole world is out there you haven't even experienced.
If you goto backpacker destinations you'll meet tons of people your age, from all over the world, looking to go on adventures and have fun. Most of these places are relatively cheap compared to the UK/US, have existing communities of freelancers and you get to experience another culture/way of life.
For the last 1.5 years I've been living in Thailand doing freelance work. The quality of life, people I've met and life experiences far outweight even my best years back home. I'm 30 now and I look back and wish I would have made the leap to go abroad at 25.
The other big benefit is that you can save a lot of money with little effort. I try to not work more than 4 hours a day and still save more money than when I was working full time in the US. Plus the lifestyle I can live in Thailand is amazing in comparison to the US. 1 monthof living frugally back home (Seattle) is what I would spend living it up for 3-4 months in Thailand.