can you run a statement for like below,
SELECT FROM `xf_post` WHERE `user_name` = 'anandgupta' AND like='Y' AND bookmark='N'
i.e. all the post liked by me but not bookmarked.
But since you can access the database, I feel you may get the posts from the query. They are not many, I think, and once I get them I will book mark them for future.