Need some help with a single kanji. I get the gist of it, but for completion sake:

"どうしてわたしじゃないんですか？！
結婚してくれって言ったくせに！
あんなに何度もセクハラしたくせに
?きあってくれないと
ぶち殺しますよ...
ほんとうに...殺しますよ"

"Why can't it be me?!
Wasn't it you who said would marry me!?
I went as far as to let you sexual harass me!
[Something threatening]...if you don't
I'll kill you...
I really will... Kill you..."

Naruofa said:

?きあってくれないと

It's "付".

usr234 said:

It's "付".

So it would be like... "If you don't stay with me I'll kill you...-" ?

More like "If you don't go out with me\date me, I'll kill you..."