My recommendation would be go for it. Put on some weight and see how it feels. Don't worry about not being able to lose it. I'm sure that won't be a problem if you change your mind. When i started gaining weight many years ago i just loved the feeling and I wasn't actually trying to gain at that point. But after that i packed on about 80 pounds and regret not continuing on. You're young and these are the prime years for packing on the pounds. If you are a true gainer, you will love the experience, especially if you find a willing partner to help. That sadly is one thing i never did find and led me to lose the weight. But that was before the internet and sites like this.
8 years