I can kind of get Keiichi lol. It's nervewracking to confess your love with the thought that the friendship between the two of you could end because of it. I don't know about Keiichi, and I don't think Souta's the type of person to do this, but there's also a chance that the one who's confessed to could get disgusted because, of course, same sex relationships. It makes the decision of confessing your love a lot harder, especially since normally (as unfortunate as it is) homosexual couples are portrayed as bad.