i dont know much about the situation, but you are allowed to grieve. You did love him and he was a big part of your life even though you were going separate paths.
take the time to grieve..get angry, get sad..its ok.
You will get through this today. You are a very strong women & you just need to allow yourself to grieve. Like others have said, even under the circumstances, Jake will always be a part of your life & this entire situation is going to make you a stronger person
I know it seems impossible but you will get through this! You are so very strong and from what you've told us, it sounds like you have a pretty amazing support system. They will be there to help you along the way....