I felt down today because of an unexpected occurrence. I usually chat with foreign friends on Skype to learn English and to teach Japanese. Today, probably around the noon, a man called me on Skype. By the way, I write my Skype ID on my italki profile on italki so there're a lot of people I don't know in my contact address list. The man was one of them. I don't know him at all and we have never talked with each other. I then thought, however, we would just talked in English and Japanese then. First, we said hello and introduced ourselves in turn. He was a very nice guy and we found a thing in common, 'weight training'. So, we had a lively conversation about it. And just then, he said, 'Why don't we talk on video call?', and I consented to the proposal. On the screen of my computer a Caucasian macho man was in a tank-top and twitching the muscles of his chest. I thought he was just a funny person. And then, he said 'let me see your muscle.' I felt so embarrassed but I took my outerwear off and showed him my muscle. Obviously, mine was inferior to his, but he admired mine. 'Let me see your leg muscle he said. I have played soccer for a long time, so I was proud of my leg muscles. I changed my trousers into half pants and showed him. And then, 'I don't see it clearly. You should take the pants off.' I thought it was weird, so I refused. But he persisted with that. I ventured to ask him 'are you gay?' And then, he said 'I'm bisexual.'
... I hung the video call up immediately and blocked and deleted his ID from my contact list.
First of all, I'm straight! I have a mustache, and while it may be true that some gay people have a mustache, it's not necessarily true that all the people who have a mustache are gay. I don't hate gay people, but I just want to learn English!
I want to talk with girls...(mumbling)

I thought, however, we just talked in English and Japanese then.

This story made me laugh. I changed the word order on a few sentences and found a few errors but overall it is well written.