My mom died last year. My dad started dating soon after, while that is hard to take in..im extremely hapoy for him. But why has he dropped me completely? I still need a parent.

Honestly, I would compare it to when you get into a new relationship - you start spending every waking minute together, you rarely spend time with friends, family etc because you're excited for this new journey. Your dad is probably excited about his new journey, and while this doesn't excuse your feelings, maybe thinking in a different way will change your perspective on it... and if it doesn't seem like he's "coming back to you," then reach out! New girlfriend or not, your father will always be your father and maybe he needs a give in the butt to remind him that you still need him, even if he doesn't think so.

The hardest part of becoming adults is realizing adults can become children (just with more years under their belt). While he should be responsible and be there for you during this difficult time, whether you are 15 or 25, it is also important to recognize you are not to blame. It is okay to hurt and see that he is coping with his own pain as well. Communication is so important in moments like these. If therapy is not an option, then maybe writing him a letter about how you feel or bring it up in conversation will initiate a solution. Best of luck and sending a big hug.

It could be the dad's way of coping with the lost of his wife. While it may not be the best way, it was a huge traumatic event for him.

You need to talk to him . People needs gentle reminders all the time .He may be facing some complications with his new realationship to the extent that he cannot full fill all his duties