Currently watching the show and wondering when (specific episode title plz) did they show for the first time these two wanting to date or take relationship to that level?
Also did the show end with them planning on marriage or other?
They realize even earlier than the final season that they will eventually be together. Sometime around the time Tony begins college, he tells her something like that when he thinks of his future, he sees her in it, but he needs to still figure out what that future will be from a professional standpoint.
At the beginning of the 8th season, they officially get together and engaged a short time later. After Tony graduates from college and gets a job in another state, they first try a long-distance relationship and then Angela moves to be with him. Neither situation works, so they break up. But they reconcile when Tony decides to move back to Connecticut and work for Angela again while he searches for a job closer to home.