Nisekoi, Bokutachi wa Benkyou ga Dekinai Recommendations
If you liked Nisekoi you'll most likely like Bokutachi wa Benkyou ga Dekinai too.
Both are Shounen Jump Harem series.
Both set in High School.
Comedy in both series are similar.
The story itself isn't really similar however how the story is done is.
The fact we get the 2 main girls at the start and others start to join the harem later is similar.
The comedy is very similar as well.