My best freind doesn't talk to me as much ??????????

Right where do i start..OK... ermm we have been best freinds for like 7 years and we talk about everything n anything... we tell each other everything and like we always have been like that and its like bros before hoes.. even tho we r girls lol..but jus recently .. like i broke up with my ex and she has been there for me..i'm not saying she hasn't if it came down to it i know in my heart she would be there for me. so i went through a bad break up and shes been there and shes been going out with this dude and yeah he treats her really nice n she thinks hes the one right and yeah thats really good. but like she has been telling me stuff but its not the same as it used to be so i jus accpeted and put it to her having a new man in her life. but like i recently went to India for 4 weeks and through out that i text her n she said she missed not havin a good ol' chat and so when i came back it was alllll normal like we talked mostly every night. and jus last week she went to see her bf and i rang her to tell her somethin serious n she didnt really respond the way i wanted her to like she jus didnt say alot and so i jus said ok im going. and then i felt hurt so i text her and said .. is there something i have done to u for u to not to speak to me properly and she basically said i jus wanna spend time with my bf n have no distraction but i didnt even mean to like piss her off i jus rang her to tell her as shes my best mate. n then i jus text bk sayin ok. and then she came back and i text her going im sorry if pissed u off i didnt intentionally do it to piss u off i jus wasnt thinking. so like then she was busy and text me sayin she wud call me the next day so i jus left it .. she was busy that day to so i left it and then she rang 2 days after and we talked for 35 mins and then she went and then the next day she was like busy and i go y dnt u speak to me as much and she was like i dnt see the need to speak to u everyday as there isnt a lot going on and where not at college anymore and i wud rather speak every couple of days as we wud have more to talk about.. so i jus said ok and like i told her to call me but she still hasnt soo i dnt know what to doooo.. like i sometimes call her and she will say shes busy which i belive and she says i'll call u back n then i get impatient and call her again im jus like that and i think thats getting on her nerves but like i dnt know ... has anyone every expereinced thiss.. i jus need some gooood advice.. pleseeee