Best Valentine'S Day Present Ever!

I completely expected Valentine's Day to suck and put me in a depressed mood all day.... And it did. But when I got home from work I got a surprise, a letter from my recruit! I wasn't expecting anything for another 2 weeks or so and I had already gotten 2 within just a few days of each other. Needless to say, just getting the letter at all was amazing. And having it delivered on Valentine's was great. But the best present of all was what was written inside. My boyfriend isn't the type to open up and just profess his feelings all the time. He tells me that he lives me a lot, but this was different. He did just say that he loved me and missed me, he described it and opened up in way that he doesn't do very often. When he left he was still unsure about whether he was sure that he wanted to be together for the rest of our lives. We had talked about it before, but he was unsure around the time he left. I wasn't pressuring him about it and we were just happy with spending our lives together in the moment. But in this letter, he let me know that he did want me to be the one he spent the rest of his life with and it made me cry and smile at the same time. I am hoping that he isn't just saying it because he is going through a hard time. Hopefully once basic is done he will still feel the same way. I don't want to fully believe in what he is feeling if it is just because of what he is going through. ....Advice?