boy problems!!!

hi! i really need advice i have a huge crush at school his name is Rwiri. i think he likes me too coz he looks at me all the time. But there is a girl that likes him and it makes me jealouse. the only that im really close to him is on school mass which are on mondays and somtimes thursdays, I get to see him on school assembly, and on school fitness which are on mondays,tusedays and fridays. And im too shy to to tell him that i like im its too imbaressing!!! please give me advice as soon as possible!!!