This refers to a partner of the opposite sex with whom you cuddle in bed but do not take things any further.
Recently among young people there’s a tendency to consider romance as being troublesome.
It seems they are seeking a relationship that alleviates their loneliness, while not being restricted by a partner.
添い寝はする
Soine wa/ha suru
with whom you) cuddle in bed
それ以上の
sore ijou no
any further
関係にはならない
kankei niwa/ha naranai
do not take things
交際相手の
kousai’aite no
(a) partner (of the opposite sex)
ことです。
koto desu.
(this) refers to
若い人
wakai hito
young people
の間には
no aida niwa/ha
among
恋愛は
rennai wa/ha
romance
面倒くさい
mendoukusai
being troublesome
考える
kangaeru
to consider
傾向が
keikou ga
(a) tendency
束縛がなくて
sokubaku ga naku te
not being restricted while
さみしさを
samishisa o/wo
(their) loneliness
埋められる
umerareru
(that) alleviates
関係を
kankei o/wo
(a) relationship
求めている
motomete iru
(they) are seeking
ようです。
you desu.
(it) seems