The "Manchester by the Sea" star has 11-year-old Matilda with the Ledger, who died of an accidental overdose eight years ago.
The actress said she still finds it difficult to accept that Ledger is no more, reported Female First.
"In all honesty, for pretty much everything else, I feel like I"m a believer in not fighting circumstances, accepting where you are and where you've been. In pretty much all senses but one, I would be able to go totally down that line of thinking were it not for Matilda not have her dad.
The actress said she never imagined herself dating after becoming a mother.
"Talk about a learning process. I think God, what would I say about it? I feel really sensitive about it and certainly did not expect to still be dating at 36 with an 11-year-old. This is not what I imagined.
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