Hi, I'm looking for a manga I read a very long time ago. The story begins with the seme who just got dumped by his girlfriend. He assembles all her stuff to throw away but before that he plans to go on a stroll with his car. When he goes out of his apartment and walks to his car, he see a young man lying down on the car. When the seme asks him to move, the young man goes lie down on the ground beside the wall. After an hour of strolling, the seme comes back to see the younger man freezing outside. The uke (younger man) tells him he was waiting for him to come back, thinking that with the clothes the seme had on, it wouldn't be very long before he comes back. He didn't think it would be an hour and he was cold because the car is hotter than the ground. The seme invites him to sleep in his apartment.

The seme has to work in the morning (I don't remember where) so he leaves the key to the uke telling him to leave it in the mail box. At his work, upon hearing the story, his female coworker tells him he's too naive and that the boy will steal all his things and that he is too trusting of other people.

When he comes back, he finds the uke at his apartment. Later on, the uke falls in love with him. At first the seme rejects him but he finally falls in love.

I think it's better to ask here : http://www.mangaupdates.com/topics.php?fid=40852

I believe it is Honki ja Neekara.