Your feelings are not his feelings. That’s important to understand and the reason that communication is crucial to relationship success. My advice is the you create regular communication and “meetings” where you discuss and share your child’s upbringing. Invite him to go the park with you and your son. Invite him to go to dinner with you and your son. Invite him to go to the zoo with you and your son. Since this is your child together, and it’s important for your son to have both parents in his life, it’s a great opportunity for you to work on your communication with him, and to apologize for what you said and did that was a mistake. At the same time remind him of your feelings and open your mind to creative possibilities for your family together. You’re both very young and dreams you had may not be feasible or practical, so you have to come up with new ones that will work.
And as a reminder, men want to feel like they’re successful and that they’re your hero, so if he doesn’t feel that with you, he’ll go elsewhere for that. It doesn’t mean he doesn’t love you — but it does mean his needs aren’t being met with you, and men go where their needs are met. Love isn’t a magical magnet. 😉