Crazy/Madly in Love Male Lead Drama Recommendation

I just finished watching, and I think it matches your description pretty well 

Time to fall in love

https://mydramalist.com/697853-love-from-zero-to-one: Link to fall in love (2022)

Love is sweet

 Gauri:

Taking no Hana so their are 2 drama with this title one is in2018 and other in 2019.. which is the correct one

There's just one the other is "Takane TO Hana". The on I suggested is Takane NO Hana 

https://mydramalist.com/29285-takane-no-hana

Some more dramas where the ML chases first and for a long time and is a little crazy about it: 

• Business Proposal: ML pulls out all the stops in pursuing FL, even after she deceives him then rejects him
• Love With Flaws: ML is very clingy about pursuing FL no matter how often she rejects him, he also gets jealous easily
• Before We Get Married
• Maid’s Revenge: perfect ML imo, and he's madly in love with the FL, going so far as to imprison her in his room and still loves and pursues her even after she stabs him
• My Secret Romance: similar to Noble My Love with the same ML actor, he's super intense and clingy about pursuing the FL
• +1 The Romance of Tiger and Rose
• The Romance of Hua Rong: ML is madly in love for a long time while the FL is unmoved, he even kidnaps her to keep her by his side
• Lucky Romance: more of a slow burn but once the ML falls he falls really hard while the FL is very reserved about her feelings for a while 
• Binary Love
• Love Better Than Immortality: very devoted ML and he does all the chasing - there is an SML and the FL does spend time pursuing him in a not very subtle way haha
• Love Revolution