I Am Confused About My Feelings

dont judge its a long story
i have a bf and i found my 'soulmate'
well lets name him Tom
this Tom guy understand my thoughts,
my emotionally unstabillity, trusting issue, empty feelings,
but we wont fit,
we have nothing in common
i like heavy music, cute ikea home deco
he hates everything i like,
while my bf Alex being the opposite,
he likes what i like and he likes me being myself
but he never understand how i feel, or even try to listen to my thoughts on anything

after 4 months, Tom is gone without reasons
i have always known Alex will be a great life partner but my heart, mind and soul will never be satisfied by him
i dont know if i should go on with him or find others who can do it like Tom