Silver Linings Playbook

I finally got around to watching "Silver Linings Playbook" last night, I've been wanting to see it since it came out. It was a good movie, I even had a little tear in my eye at the end, (can you feel a but coming on here?) but (there it is) it could have been so much better.
                                       Spoiler Alert!
 At the beginning of the movie I actually felt a bit like I was experiencing a mental disorder of my own, they did a good job of getting you into the characters mind set. Like the part where he freaks out over the ending of "A Farewell to Arms" because it doesn't have a happy ending, foreshadowing there but not the way I anticipated. As the movie goes along you see that silver lining (wait a minute that's not his name) Pat, is not the only character in the film with a serious mental illness, just the only one that's had, court ordered, treatment for it. The film moves along nicely with ups and downs, with comedy and drama and then it takes a Hollywood turn. Pat's father risks everything he has on a double bet which includes Pat and Tiffany scoring at least a 5 in a dance contest (which is a long shot at best) and Pat finding out that Tiffany actually wrote the letter that he thought his ex had written. Now it looks like everything is set up for an impossible happy ending but Pat gets a look in his eye and you think, maybe he's going to show everyone how ridiculous they're being; at this point I thought if they play this right it's going to be sad but amazing. But alas the film makers seemed to forget they were making a drama about people dealing with mental illness and instead were making a romcom, complete with a don't-let-the-girl-get-away speech, chasing-her-down-the-street, Jerry Maguire-esque you-had-me-at you-wrote-it-last-week moment. Yes it was somewhat satisfying seeing a happy (silver lining) ending but it was so unrealistic as to take away from an otherwise amazing movie. Yes, everyone's happy, but for how long? How long before they get in a fight and she starts sleeping around, and if she does will he lose it again? How long before Pat's dad risks everything on another superstitious bet? Maybe we're just suppose to be happy that they're happy for a moment and not think about the incredibly thin line by which it all hangs.