I need your help!

To bump into is

1. when you walk into something unexpectedly.

For example, it's really dark outside. You're walking home when, ouch! You walk into something, which happens to be a tree. You could say, "Oh man, I just bumped into a tree!"


2. "to bump into" can also mean seeing someone unexpectedly.

For example, you are going to the store when you see an old friend- you haven't seen him forever! You go over to talk to him, saying how surprised you are to see him. You could say, "Wow, it's nice that I bumped into you!"


Hah, my examples are really lame, but yeah. That's the best I can explain it. Hopefully this works for you!