Unsuited pairings

"You make me feel whole"
~but why am I broken~

"You are the missing piece in the puzzle"
~but now I still feel incomplete~

"My one and only"
~and now I'm lonely~

"I'm like putty in your hands"
~but I've slipped through your fingers now~

"Mould me like I'm clay"
~baked me into a pot and left me~

"You're my Eve"
~I'm poisoned~