Email break up

I am devastated. I was about to move in with my boyfriend of almost 2 years. Everything was amazing to me. We were about to start doing construction on my house so he could come live with us. He was making all the big moves (open a joint account, buy half of the house, write a will, hire an architect firm). We were moving forward, as the construction was ready to begin. He seemed quite involved with the project and was truly a stepdad to my kids. He called them stepdaughters to everyone, including his family, coworkers and friends on social networks. He came to spend our last week-end together and everything was extremely normal. He was playful and affectionate. He repaired something in the house and ordered a missing piece online so that he woukd come finish his repair on the week after. When he left on the Sunday, he was in a super good mood. He kissed me, told me that he loved me and said "See you Friday". On the Sunday night, he texted me goodnight. On the Monday, I have 6 emails in my inbox. He wrote to the bank, the architects, the construction workers and the notary to cancel everything. Two of them are for me. The first one says that I deserve someone who will truly love me and that he's been doubting us for the past year. The second mail states that he is in love with someone else.