Issue could ruin our relationship

My fiancé and I are to marry within the next six months, but I struggle to manage his expectations when it comes to physical intimacy. He doesn’t seem to understand that I am not always comfortable with it, and this creates problems because I force myself and feel as if I am being turned into someone I am not. It’s not as if I don’t love him, and he is the most amazing partner, but this issue has the potential to ruin our relationship because he doesn’t get what I’m trying to say. I worry that if we can’t resolve this before our wedding, it will only get worse. Should I ask him to come with me to a counsellor or relationship expert? I haven’t suggested it because I worry that he may take this the wrong way.
You shouldn’t worry about whether your partner is taking something the wrong way if the future of your relationship is at stake. There is a mismatch when it comes to expectations and the sooner you both address it, the stronger your bond will be. If you aren’t comfortable with this conversation before marriage, you are setting the wrong tone because you should be able to discuss anything and everything with someone you intend spending the rest of your life with. Talk about it, suggest meeting with a counsellor, or find a way of arriving at a compromise that works for you both. It will be a template with which you can manage all other issues, going forward.

How do I convince my friends that getting into a relationship doesn’t mean I will put them second? They are moving away from me because I am the 
only one dating, and I don’t know how to stop this.
They are trying to process a change and will be reassured when your actions mirror what you tell them. Give them time and space to adjust, keep lines of communication open, and allow them to see that nothing is different between any of you.