I have an adult daughter who is currently in a relationship with a much older woman. DD is 24 and the woman she is in a relationship with is 40. They have been together for a few months now. I have some concerns regarding the significant age gap between the two of them. DD has told me she is really happy within the relationship and how it's going between them, while my DH has said that large age gaps are much more common and accepted among LGBT couples. DD is a lesbian and we have always loved her and supported her from the day she came out to us. She is also an only child. We are very close. DH thinks I need to just stop worrying.
Aside from the age gap itself, there hasn't been anything that I've seen or heard about DD's girlfriend or her behaviour that would be a cause for concern. I think I am just worried that because they are at such different stages in their lives that it's just going to end badly. She has had one long-term girlfriend who was the same age as her, but they broke up last year. As I mentioned DD herself is happy and my DH has no concerns, so I seem to be the lone dissenting voice. I suppose I am looking for someone to tell me that either I am right to be concerned, or that I just need to give my head a wobble and let DD get on with living her life.