I think this has been addressed before. EVERYTHING IN YOUR REALITY YOU CREATE. EVERYTHING. The pastor telling you about persistent prayer. Being so upset. Everything you have created. 1) you say you need him. You don't need him. That is incorrect. And trying to use LoA to get someone back from this mindset will never work. Never. You don't need anyone but yourself. You may desire/want him. But you don't need him. 2) Acting upset will not help get a boy back via LoA. 

You must MUST stop this behaviour. It is a vicious cycle. Read Ask and it is Given. I think I have told you that before. If you did, READ IT AGAIN. READ IT THOROGHLY. It is all about you. It is not about anyone else. Until you are happy with yourself, nothing will manifest. And if you are not willing to put in the work to raise your vibrations, then you are not willing to put in the work for him. When you raise your vibrations to one of joy, absolute ecstasy, he will come. Period. It is that easy. Outside of a LoA perspecitve, would you want to date someone who is sad and depressed?

Take these steps and he will come into you arms. Everyone on this board will gaurantee it. Read these steps. Live these steps. 
1) Raise your vibrations. Become happy. This is your life. Your reality. Raise your vibrations to the highest level of joy. Read all of the previous posts about this. Do not move onto the next step until you can get to this level
2) Visualize/RS  Feel the touching. Feel the emotions. And after that, maintain that happy emotion when you are done. You just sent a message to the universe. And it is granted. Boom. Live like it has already been granted. Be patient but know it is granted. If you aren't 100% convinced, keep doing step 2 until you are fully convinced. Read online about doing this step more effectively as well.
3) Maintain step 2 throughout your life. Know for certain. and let go knowing it is for certain. 

You will have ups and downs. But if you follow those steps, it will happen. 

See?  You just attracted a fantastic response there! And I completely agree.  It should be a prerequisite for everybody to read Ask and it is Given.  It is truly a wonderful book that will help you to better understand why you get the results that you do. I tried to defy the whole Law of Attraction by crying hysterically, stomping my feet like a toddler and demanding that I get my guy back NOW! Lol. Aaaaaaaaand here I am, much further down the track finally understanding that the universe will yield NOTHING but what you are a vibrational match to. There is simply no way through the back door. You must get happy! Is that such a bad thing?!  You can steadily and quickly change your entire life, by doing the processes we are all discussing. And by consistently making it your job to reach for better feeling  thoughts ALL THE TIME. When you can do that for a little while, things will truly shift, you will realise you don't NEED your guy, you just WANT him. And then the fun of attracting him back can begin! 😘

You get sad on the weekend?! 😜

You shouldn't listen to other people, unless what they say resonates with you. You create your entire reality. I understand the 7 years you keep mentioning, but really you must learn to be able to function and be content by yourself. Time doesn't matter, you've had a connection with him in the past, so you are connected eternally now. What matters is your thinking and the emotions you are experiencing. And  you are thinking entirely from a negative perspective. It's great you are trying, and if you believe therapy will help you then it will. 😘

By changing your thoughts. It's the key to everything. You must focus at first, until LOA kicks in and helps you out!. That's it. You strive to reach for better feeling thoughts about your situation. There are 22 processes in Ask and it is Given. I've commented in other threads about the numerous practices I utilise to change my thoughts. Lots of other people have done the same. But it all comes down to you- you are the only one who can change your thinking.