I have been single for a decade with 2 kids. Who were 11 & 9 when my ex DH had an affair and left . He has since remarried to the OW. All very amicable. Regular contact with kids/dad. As they have got older they organise where they stay themselves about 3 miles apart. (Rural) so close by. No set days - as and when it suits them.
I work full time . I am a recruiter for a chain organisation. This takes me away from home at least 3/4 days a week. Kids stay by themselves or go to dads as they wish.
I have had a couple of short term relationships in this time but nothing much beyond a couple of months. Last year I met DP and am head over heals. He is kind, generous and respectful.
My 22 year old DD is being a nightmare. Behaving like the worst kind of self absorbed teen. Really rude to my DP who has the patience of a saint. Screams at me that 'he's always here and I never get time with you anymore' .. which wouldn't be as awful as it sounds if it wasn't for the fact that she is away at Uni 75% of the time and has a huge social life back here - so this 'mum/daughter' thing is ENTIRELY at her say-so. For example if I am home all day by myself and suggest a shopping trip together (which she loves) but she has already made plans for later in the day - she will decline... However - if my partner comes over (bare in mind because of my work the most we get to spend together outside holidays is 2 maybe 3 nights a week..) she will yell and scream and kick off . Because of this I feel pushed out of my own home as I am embarrassed by this behaviour from an adult (an adult I have obviously made a terrible job of raising) .. and opt to stay at my DPs instead. I really don't want to do this as my 19 year old is still at home and without DD we have a happy harmonious household.
I have spoken to her about her behaviour and she just says that 'I am her mum and should put her first' .
DP proposed a month ago. Because of DDs hostility I have been in willing to tell anyone or celebrate which is crap for both of us. This all feels very wrong. I don't want to lose her but it seems Dad can remarry with out any issue - but I am just not allowed to have a relationship . (She did this to 3 other relationships I had in the last decade but I have in and stopped them. ) I will not be doing that this time.
How do I speak to her ?