Please help (Preferably a view point from single moms) ???? POINTS?

Maybe she is confused about how she feels the age difference and whether she wants a long tern relationship or she has found another person.Maybe she is scared of getting close and hurt again .As for your son she does not want him to get attached as he may have done in the past. All sorts of reasons come into play. You could try talking to her or if not then write a letter.You both need to know where you stand so you can move on in the relationship or move on and forget about her.