I am trying to figure out the best way to word our invitations. The scenario:-My parents are helping us host; we want them to be the main hosts on the invitation.-His parents (both sets) want to be included on the invitation; his mother and father are divorced.-His mother is happily remarried for about 5 years;-His father has been living with his girlfriend for over 10 years. I feel bad leaving his parents' significant others off because they have been a great part of his life. I have looked online everywhere and everything I come up with sounds stupid. Just trying to see what would sound relatively normal to you, given the situation.Thank you in advance!