Hi Sweet Pea.
I was in the same boat you were in during high school. I think it is just that age group. Honesty about your LM is very important early in the relationship so you will know wheather they will except it or not. Trail and err is how I have found it to work. Even though I am only in my third relationship right now she excepts me for who I am.
Hope this helps and thanks for posting. Remember you do have in insight for the parents of younger children that are on the group so your message will help.
Talk to you soon.