should i be upset??

me and this guy (we'll call him austin) have been seeing eachother since august up until two weeks ago. we both got a little distant because of school and work, and another guy asked me out (we'll call him josh). austin and i were not exclusive, but we've been seeing eachother for a while so it felt weird for me to say yes to going out with another guy. here is how i approached the situation. i've been really upset and crying about it, but i have a right to, right? i just had feelings and my heart is so sad because he didn't feel the same :(