 If you liked
Motto To LOVE-Ru
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 ...then you might like
Nisekoi:
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Nisekoi and To Love-Ru are popular harem/ecchi Jump manga with successful first seasons. If you like one, you'll like the other. Both second seasons, though, are shorter, more comedy-centric and feel like a drop in quality compared to their respective first seasons. I'd still recommend both if you enjoy harems, ecchi and all that, though.