Well two simple things . One , if You get into a relationship , the other person might expect or will expect more or atleast equal of you . If you aren’t able to give in to someone emotionally As You said You Dont like touch or signs of affection , There are chances That the relationship wont workout .

Second , best thing is that you Should go into a relationship . Even if the realtionship fails And You might suffer for a few months , THE EXPERIENCE YOU GAIN OUT OF HAVING EXPERIENCED THE RELATIONSHIP IS INVALUABLE . Thats what separates You from other people – Most other people have or atleast Have been in relationships . They Might Have failed in their relationships . But The One Problem You Have is FEAR OF FAILURE . Other people after failing atleast once will have become more able to withstand emotional drainage after a failure . Their Fear oF failure becomes less .

Hope this helps .