Hello Surbhi...
Loving someone so much is your victory anyways! you are in touch and things seem good between both of you. 1% positive move is no joke lolzzz. So take it exactly the way it is, just be by his side, every person needs a pillar os strength who will always be there for the. Making them fall in love is not an overnight thing, love grows gradually. You must encourage him for his London trip and look more excited. Dont ever feel insecured as thats the thing u will attract by feeling so. Just keep loving him and let him go (let the fear n desperation go). Be the girl he would like to share his experiences and day to day life with. Its just going fine. He will love u as the moment u desierd the same, he is yours already. All the best!