Started off on thin ice
Im still here but I can't skate

from Wale (Ft. Marsha Ambrosius) – Diary Lyrics on Rap Genius

Basically, the relationship was tricky from the start because of how she was treated in her previous relationship. Hes saying that he’s still in the relationship “started off on thin ice"
"im still here but i cant skate” means that hes still in the relationship but he doesnt know how long it will last because of the insecurites

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