I'm a tiny bit like "jessckuh", my sister isn't my real sister either, same mother, diff. dad's.
She doesn't really know her dad but gets along great with her step-father, so my real dad.
She's a lot older than me, 10 years or something, and I visited her last week, my dad had to pick me up in the evening, and he talked forever with my sister. No but at least half an hour. And they always talk and laugh and stuff.
But he NEVER I mean NEVER like NEVER (I think you all got that now..) laughed with me, nor had a real conversation. I really do try hard to get him to talk with me, but he just rejects every conversation I start. The only time we actually talk is in the car.. Like I say what happened at my sister's and he's just like "really? nice" or just doesn't say anything.
Or when it's dinnertime "come downstairs" then I have to get my food and go away again. We don't eat together.
It makes me feel like a failure, but what would I do other than life with the fact he will never really 'accept' me?