What would you do...

[MissLaRue]

...in this situation.
Me and my Dp have been together for 2 years. He has a DS and DD. They spend every weekend here at our house.
My problem is this; my DP complains that I don't show him enough affection when his kids are here. If I give him a kiss and a cuddle you can guarantee one of the kids will muscle in and seperate us and start cuddling their dad and push me away. This upsets me a I feel left out so I do back off slightly. If my DP wants to give me a kiss or cuddle then I always recipricate before we get pushed apart by one of his kids. But i don't initiate it too often because I feel more upset when one of the kids shoves me away.
My dp doesn't understand why I do this or why I feel upset/left out when this happens.Can anyone advise? have you been there and whats the best thing to do in this situation?

DP and I have been together for 4 1/2 years. We do not kiss/cuddle near DSD even now. We have big family cuddles of course but no private ones for me and DP until DSD is in bed or back at her moms.
I think your DP is being unreasonable, he seems a little childish himself from your description.
Why do they spend every weekend together?

It must be annoying but I don't think this is necessarily a step child thing. My youngest is 2 and me and his Dad can't have a cuddle or peck on the cheek in front of him without him shouting "MY MUMMY!" OR "MY DADDY!!!" and pushing us apart lol

How old are the kids? How does your partner react when you show each other affection and the children muscle in? If he doesn't pull them up on it, I'd say to him "I'll show you more affection when you tell the kids to stop pushing in when we do". All he has to say is, me and MissLaRue are having a cuddle, wait a second please.

If he refuses to pull the kids up on the pushing in, then I think you have a good reason not to instigate any affection in front of them. But maybe you could just say to them "Hey kids, give us a second and then you can have a big cuddle" (Depending on their ages of course. If they're old enough to know better they should be told quite frankly by their Dad that pushing you and him apart is disrespectful and to wait their turn)