I am in love with 2 men> Please help me> they both want to marry me?

I am very much in love with 2 men. This is my dilemma. The first man I love is a Marine Special forces and he gives me the emotional needs and ual fulfillment I need> He wants to marry me and us to moe in together. I have very very deep and strong feelings for him and do love deeply. Still I am very much in love with the other man as well that gives me the same them Bill does. I am not able to chose between them because I do not want to hurt either and each time I think about it it breaks my heart to let one go> How do I know whom to let go and whom to keep if my heart tells me I am in love with both? We are all in our 30 and I should be able to make a decision like that. Any ideas because this is killing my heart one day at the time. I have known both men for many years. PLease help . I have told them about each other but neither wants to let me go. How can I know who is right?