Yes ,it is a continue part of first drama.
Starting of drama is not so good it is actually make me confused because the way first drama end ,this drama should start from where the first part end and then director can bring the story into flashback that why did he behave badly with her . The story start with another angle and ending part of first drama conclusion in the middle part of this drama.
In this drama there is three pair of couples who love eachother madly , two pairs were from previous drama and new pair of couple entry in this drama ,I think there is no need of third pair but if they put it so they also get few more screen because they were so cute together and their scene also balance the drama to getting bored and in the ending part of drama this couple also have beautiful ending like she wanted to have baby with him and he told her without marry it is not right to do so,so the drama should end with their wedding so it looks like a complete story and a happy ending ..some episodes in this drama were boring .
Above all what I like about this drama that immense love between couples and first lead character in whatever the consequences,whatever the problem he didn't leave her ,he bind her ,he not allowed her to leave him and that's why their bonding grew so strong ...