Then tell the person attempting to manipulate you to get lost.
Business is buisness. Do what’s best for you and your possible future company.
Or tell them nothing if you'd feel better that way. You owe them nothing.
Then you own everything. Don't let emotions play into business decisions, on either end. Take the better offer and decline the others. You have no obligation to anyone.
It's all words at this point in time. Do what you want to do.