Dumped by Widower

Would like some advice please!! I met this lovely man 5 weeks ago and on Monday he ended things saying he couldn't do "us" anymore. I was wary and tried to slow him down when we met as his wife has only passed this year in March from breast cancer. He assured me he'd done a lot of his grieving whilst his wife was very poorly. Of course my gut was saying thats impossible! Ken was such a gentleman so kind to me and spoilt me rotten. He began to ask me to join him in his future plans. I've had health issues and he really looked after me and i began to let him in. Last Wednesday he said he loved me! On Saturday I had a bad night with a terrible migraine. I went to sleep in the spare room as his snoring was keeping me awake. This freaked him out. He said it reminded him of when his wife was ill in another bed and that he felt helpless. Monday morning he dumped me! Is there anything I can do or should I just let it be?