verschweigen means to deliberately keep something secret by not speaking about it; to conceal. It's a powerful verb built from schweigen (to be silent), but it implies a more active hiding of information.
In the song, the singer expresses a profound level of intimacy with the line "Ich kann dir erzählen was ich mir selbst verschweige" (I can tell you what I keep secret even from myself). This beautiful lyric uses the word to show a vulnerability so deep that he can share thoughts with his partner that he wouldn't even admit to himself.
This song is all about the feeling of being in a relationship that just feels easy. The singer, Henning May, describes a love that isn't complicated or full of pressure. He can be completely honest, saying things like, "Es ist so einfach wenn ich sage nein" (It's so easy when I say no), because his partner gives him space and time. It's built on small, perfect moments: watching his partner get excited about snow, laughing between kisses in the morning, and feeling totally seen.
He gets to a point where he can share his deepest secrets, singing, "Ich kann dir erzählen was ich mir selbst verschweige" (I can tell you what I keep secret even from myself). All this ease and comfort leads him to hope that maybe, just maybe, this feeling could last forever. The repeated word "vielleicht" (maybe) is the heart of the song. It’s not a loud declaration of forever, but a quiet, hopeful wish that this wonderful, easy love will stay.